Analysts are divided over whether the listing of a Manhattan building will represent the era of billion-dollar transactions or an outbreak of irrational exuberance.

A half-dozen buildings on Second Avenue will house ventilation equipment, disperse smoke and allow for evacuation from subway tunnels in emergencies.

The Port Authority of New York and New Jersey formally approved an agreement with the developer Larry A. Silverstein for financing of the project.

As the number of Asian buyers and lessees in New York has grown, commercial real estate brokers are quickly learning just how pervasive feng shui can be.

The High Line, a new park built along abandoned elevated rail tracks in Manhattan, has created a strong real estate submarket.

The Port Authority of New York and New Jersey is selling the Durst real estate family a piece of what will be New York City’s tallest building.

That decision and a similar vote to approve a project at the old Domino Sugar refinery in Brooklyn gave new life to Mayor Michael R. Bloomberg’s development agenda.

Gay Health Men’s Crisis, an organization that serves H.I.V.-positive people, has to shift locations because of high rent increases.

The office tower had been scorned as a white elephant, but developers fought for a stake in a skyscraper that will draw international attention.

A family that owns 10 Midtown Manhattan office towers is favored by some Port Authority officials, but a deal is not assured.